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Date: Tue, 19 Nov 2013 15:45:31 +0400
From: Gleb Smirnoff <glebius@FreeBSD.org>
To: Steve Kiernan <stevek@juniper.net>
Subject: Re: [JNPR] Network stack as a module (RFC)
Message-ID: <20131119114531.GF7577@glebius.int.ru>
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Cc: freebsd-net@freebsd.org, luigi@freebsd.org,
 Marcel Moolenaar <marcel@freebsd.org>, zec@freebsd.org,
 Marcel Moolenaar <marcel@xcllnt.net>
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  Steve,

On Mon, Nov 18, 2013 at 02:35:08PM -0500, Steve Kiernan wrote:
S> > Have you measured the performance impact on the loadable stack? I
S> > suppose many functions, that are now called directly, with loadable
S> > stack will be called via functon pointers.
S> 
S> No, only a small number of functions were needed to be methods in a
S> netstack kobj in the current implementation that we have. And some of
S> those may need to change, as they revolve around NFS exports.
S> 
S> Currently, we have four (4) methods that are needed:
S> socreate
S> vfs_export
S> vfs_setpublicfs
S> vfs_stdcheckexp
S> 
S> When one is not dealing with NFS exports, only the socreate method is
S> of interest. It is called just before mac_socket_create() would be
S> called in socreate().

Sounds okay. Thank you.

S> See http://people.freebsd.org/~marcel/Juniper/netstack-v2.diff, which
S> is the full patch set that had been previously sent out. Some things
S> have changed a bit since then, but if you look for curnetstack usage
S> in the patch, you should be able to see the places where netsack
S> methods are called.

The patch is quite huge to understand it as a whole. :)

-- 
Totus tuus, Glebius.